迪拜下暴雨。(图/路透)
近日迪拜下暴雨导致多处淹水,连全球第二繁忙的迪拜国际机场也遭殃,有专家指出,迪拜这起不寻常的暴雨有可能是“人为干预”造成的。事实上,阿拉伯联合大公国一直在使用一种人工降雨(cloud
seeding)技术来增加供水。
《每日邮报》指出,这种人工降雨的操作方式,是由气象站发现会降雨的云层,并通知飞机进入对的云层中,撒出一种名为“盐耀班”(salt
flares)的化学物质,而这种物质可以促进云层降雨,使当地的年降雨量增加了15到20%。
这次的暴雨让人们与一些气象专家质疑,究竟是不是人工降雨惹的祸。然而,阿拉伯联合大公国的国家气象中心(National Center
of
Meteorology)说,这次暴雨并非他们人工干预所造成,并解释说,人工降雨的基本原则之一在于,必须在下雨前就锁定云层,如果遇到严重的雷雨天气,那么进行任何操作就为时已晚。
儘管阿拉伯联合大公国频繁使用人工降雨,但一些专家仍怀疑,降雨技术是否能将降雨量增加到这么多。
研究显示,人工降雨通常会使降雨量平均增加约5%至15%,远低于本週出现的极端洪水。此外,人工降雨通常会在人口稀少的地区进行。
而这意味著迪拜降雨量大增,究竟是因为大自然的威力,还是其他地方人工造雨所致。
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